Unreal SM 5 is worse than mobile ES 3.1 on Aliasing

Development Rendering
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1

I’m trying to change the Match 3 project, making elements into 3D instead of original paper sprites.

However, there’s a lot of aliasing when render with desktop mode, DX 12, scalability set to cinematic, Shader Model 5.

But the aliasing is gone on the 3D object when render with ES 3.1 mode.

I set all anti aliasing to the highest possible already, using TXAA, level 6.

This is the ES3.1 result, all smooth.

ES31.PNG
ES31.PNG1240×1213 251 KB

This is the SM 5 result, blurry and aliasing.

sm5.PNG
sm5.PNG705×674 94.8 KB

The 3D object is packed inside a BP, only has LOD 0, but it has many polygons, like above 6000.

BTW this never happens in UE 5, just UE 4.

The project is under UE 4.27.2

Thanks

2

SM5 result looks like somehow upscaled, whereas ES3.1 is on the native resolution

3

OK, I solved this, it appears there’s the performance setting in the Editor.
Just checking “Disable DPI Based Editor Viewport Scaling” in Editor Preference → General Performance made the aliasing problem much better.
I’m using 300% DPI scale up on my 4K 42" monitor, so this may affect the viewport scaling. The problem was gone also under standalone mode.